Minnesota tree inspector program

The certified tree inspector program was implemented in 1974 in response to Dutch elm disease and oak wilt. Since then, hundreds of communities have participated, and there are more than 800 certified tree inspectors in Minnesota. Certified tree inspectors have passed a test in which they demonstrate proficiency in Dutch elm disease and oak wilt management, tree identification, firewood identification, and shade tree management. Tree inspectors must attend annual recertification workshops to learn the latest information on tree care, exotic species management, shade tree management, tree selection, insect and disease identification, tree health care, and other timely topics.

New tree inspector certification FAQs

What is a certified tree inspector? Certified tree inspectors are people trained and certified to conduct local shade tree management programs.

What do certified tree inspectors do? Tree inspectors survey community tree populations to identify and manage disease and insect problems. They also provide recommendations for tree health and care. Tree inspectors monitor for new exotic insect and disease problems such as emerald ash borer, Asian longhorned beetle, and sudden oak death.

How do I become certified? To be certified as a new tree inspector, you must pass an examination that measures knowledge in shade tree pest identification and management. Exams are given at the end of new inspector training workshops. You must pass the examination with a score of 70 percent or better to become certified. The workshop includes basic instruction so that you can:

identify all native tree species, with or without leaves, and all felled or downed trees with bark intact common to your work area

know and understand the biology of Minnesota's most common shade tree pests

be familiar with symptoms of oak wilt and Dutch elm disease and be able to identify other problems affecting oaks and elms

know the proper method of collecting samples for disease diagnosis

know the approved control methods for these common tree pests

be familiar with recommended tree species used in replanting programs, their planting requirements, and their care after planting.

How long is the certified tree inspector certificate valid?Certification is valid for the current and following calendar year.

Recertification FAQs

How do I recertify? Tree inspectors must take one continuing education workshop every calendar year to receive a certificate for the following year. Recertification is valid for one calendar year. If your certificate expires, you must retake and pass the certification exam.

How much training do I need to recertify? You may either attend one six-hour session or two sessions that are at least four hours each. Training other than at the Shade Tree Short Course or other University of Minnesota sponsored workshop that meets the education criteria below could qualify for recertification. Submit the agenda to the Tree Inspector Certification Program coordinator for review and approval at least two weeks in advance.
Workshops qualifying for recertification may focus on any of the following: